Find the product of the sum and difference of two terms.(x + 1)(x - 1)
A. x2 - 2x - 1
B. x2 - 1
C. x2 - 2
D. x2 + 2x - 1
Answer: B
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Solve the problem.The amount of money (in thousands of dollars) that Americans spend yearly at coffee retailers has increased greatly. 
Let D be the amount (in thousands of dollars) Americans have spent on coffee every year since 2014. A model for the situation is 
How much money will Americans spend on coffee in the year 2027?
A. $235,000 B. $2350 C. $235 D. $23,500
Using the Divergence Theorem, find the outward flux of F across the boundary of the region D.F = -9xz2i + 2yj + 3z3k; D: the solid wedge cut from the first quadrant by the plane 
and the elliptic cylinder x2 + 9y2 = 16
A. 
B. 
C. 
D. 
Solve the problem.Suppose 8 candidates a, b, c, d, e, f, g, h are involved in a Pairwise Comparison Method election. The number of pairwise comparisons each candidate wins is shown in the table. 
Which candidate wins the election and how many pairwise points does the winner have?
A. c, with 5 pairwise points B. c, with 7 pairwise points C. c, with 6 pairwise points D. c, with 8 pairwise points
A point lying on the terminal side of angle ? is given. Find the exact value of the indicated trigonometric function of ?.(-3, -4) Find sec ?.
A. - 
B. 
C. - 
D. 